The Teaching Point

CT scans can show the extent of hemosiderin in pigmented villonodular synovitis (PVNS). If there is extensive hemosiderin deposition, it shows an increase in density on CT. On T1 and T2 weighted MR images, hemosiderin shows either low or no signal. The most typical MRI feature of PVNS is showing a low signal area on T2-weighted imaging, which is due to the deposition of hemosiderin. The main treatment of PVNS is surgical resection. However, postoperative radiotherapy is important for local control of extensive tumors or positive margins.






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Pigmented villonodular synovitis of the temporomandibular joint: case report and the literature review for postoperative radiotherapy

Free full text article: Pigmented villonodular synovitis of the temporomandibular joint: case report and the literature review for postoperative radiotherapy

Abstract
Pigmented villonodular synovitis (PVNS) is a benign proliferative disorder of the synovium that usually involves joints, tendon sheaths, and bursae. It presents rarely, however, in the temporomandibular joints (TMJs). This paper reports a 59-year-old female patient with PVNS of the TMJ and its clinico-pathologic features are discussed. The patient was treated with surgery and postoperative radiotherapy (PORT). Follow-up was conducted, and there were no recurrences, metastases, skin changes or joint stiffness noted. The main treatment of PVNS is surgical resection. However, postoperative radiotherapy is important for local control of extensive tumors or positive margins. We conducted a literature review for postoperative radiotherapy case reports related to PVNS of the TMJ.






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1. case report

2. pigmented villonodular synovitis

3. PVNS

4. temporomandibular joint

5. TMJ

6. postoperative radiotherapy

7. PORT

8. prognosis


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